All bulbs are produced under HELLA's stringent testing requirements, you know this is a brand that can be trusted. Performance +50 bulbs have a wider and brighter light, filament design has been optimized and silver top coating so that the bulb is nearly invisible in the headlight 2 Bulbs - Twin Blister Packaging; Up to 50% more light output than standard bulbs which provides you the best lighting performance, giving performance-oriented drivers additional safety time and comfort on the road Fit Type: Vehicle Specific